Air-valve for radiators.



Patented Mar.29, 1910.

INVENTOR. j@ @z BY y 4 TToR/v J. T. WHITING. AIR VALVE FOR RADIATORS.APPLICATION FILED AUG. z5. 1909. 95 3,079.

W TNESSES:

JOHN T. WRITING, OF SYRACUSE, NEW YORK, ASSIG-NOR OF ONE-HALF TO ALLENB.

PIERCE, OF SYRACUSE, NEW YORK.

.AIR-VALVE FOR RADIATORS.

To all whom it 'may concern:

Be it known that I, JOHN T. WHITING,

' a citizen of the United States, and resident of Syracuse, in thecounty of Onondaga, in the State of New York, have invented new anduseful Improvements in Air-Valves for Radiators, of which the following,taken in connection with the accompanying drawl time will positivelyguard against the esi To the lower end of said casing cape of waterwhich generally exists in a radiator when cold and results from thecondensation of the steam.

A further object of the invention is to provide an air-valve which willbe simple in construction and also reliable in its operation.

To that end the invention consists in the novel arrangement andcombination of the component parts of the valve hereinafter fullydescribed and set forth in the claims.

In the accompanying drawings Figure 1 is a vertical sectional view ofthe air-valve embodying my improvements, and Figs. 2 and 3 aretransverse sections on the lines -X-X- and -Y-Y- respectively.

Referring to the said drawings like characters of refe-rence indicatelike parts.

denotes an upright casing which is of cylindrical shape, and constitutesa main chamber and is formed at its top with the usual nipple 2- for theexit of air, to which nipple is applied a cap -3 screwed onto the samein the well known manner. is applied a cap *flsecured detachably theretoby screw-threading the parts. The cap -l has its bottom disposed some`distance from the end of the casing and is formed with a`centralidownwardly extending nipple -5- which has a circumferentiallyreduced end portion 6-.

speeiacation of Letters Patent. Patented Mar. 29, 1910. Applicationfiled August 25, 1909.

Serial No. 514,519.

To the nipple 5m is secured an auxiliary casing -7 which is rendereddetachable by screw-threading the parts. This auxiliary casingconstitutes the inlet chamber and is formed at one side with acomparatively long horizontally extending nipple -8- which is threadedexternally and is secured in an aperture in the radiator (indicated at--A-) as usual. In the aforesaid cap -4 is provided a disk -9-preferably composed of rubber and having its lower face formed with aplug 10- shaped to it the interior of nipple -5 and reduced portion ofsaid nipple. Said disk 9- is provided with a central vertical air andwaterpassage -11- which extends through the plug -l0 and terminates at avalve-seat -l2 formed in the bottom of plug. Said seat being preferablyof conical shape. The disk is held in position by means of a circularplate -l3- screwed into the cap -4l-, upon which plate the lower end ofthe casing -lbears, and in the center of said plate is provided anopening -lllcommunicating with the aforesaid passage At the centralportion of the plate -13- is formed an upwardly projecting circularhousing -15- covering the opening -14-. This housing is provided at itstop portion with a shoulder -lG- forming a seat for a diaphragm -l7-fitted to the interior of the casing -lupon which diaphragm a float 18`normally rests.

By seating' the diaphragm upon the housing a small compartment -19- isprovided between the diaphragm and plate 1S- which compartmentcomnmnicates with the aforesaid opening M14* through ports -2020- formedin the housing -l5-.

The float is of tubular shape and is open at its bottom and its top ispreferably formed crowning. Between the float and casing -1- is provideda small. space for thc passage of the air and water, saidspacecomnnmicating with the aforesaid compartmcnt through ports -2l-21-provided at the edge of the diaphragm -17- as more clearlv illustratedin Fig. 2 of the drawings.

In the lower chamber -7 is disposed a valve Q2- which is preferably ofspherical shape and is provided with a stem -23- extending through thepassage Ell, opening liland an aperture .Zetin the top of the housing-15-, and is suitably connected at its upper end to the top of the floatwhereby the said valve is suspended normally out of its seat -12-- Thelower chamber is preferably formed with a cylindrical cavity -25-serving as a guide for the valve. To guard against binding of thevalve-stem in the passage 11 and aperture -24- incident to the lateralmovement of the float, I form the stem in two sections loosely connectedabove the diaphragm as indicated at Q6- It will be evident that byunscrewing the cap 3 when admitting the steam into the. cold radiator,the air issuing from the radiator is caused to enter the chamber -T fromwhich it discharges through the passage -11- and ports -Q0-20- into thecompartment #19-, and'thence passes through the ports -21-2linto thefloatchamber -1 from which it escapes through the usual nipple -2-.

When the water, which is usually contained in the radiator, isdischarged therefrom and rises in the upper chamber -1-, it is evidentthat the resultant lifting of the float 18- will close the valve 29,-and thereby prevent the escape of the water through the nipple -2-.

t isl obvious that after communication has been cut off between thechamber 1- and chamber -7- by the closing of the valve, the float willeventually descend to allow the water to return from the chamber --1g tothe radiator.

What I claim as my invention is 1. A radiator vent-valve comprising anuprightcasing constituting the main chamber and provided at its upperend with an air-exit, a cylindrical float disposed in said chamber, anauxiliary casing secured detachably to the lower end of the main chamberand having a closed bottom and constituting an air and water-inletchamber and formed at one side with a horizontally extending nipple forattaching the same to the radiator, a disk supported removably in thelower chamber and disposed above the nipple to completely close theupper end of the said lower chamber, said disk being provided with asmall central vertical passage affording communication between the twochambers, and formed in its bottom face with a conical valve-seatsurrounding the lower end of the said passage, a rod extending throughthe said passage and valveseat and connected at its upper end to the topof the float, and a spherical valve disposed in the lower chamber andconnected to the lower end of the rod as set forth.

2. A radiator-valve comprising an upright cylindrical casingconstituting a main chamber and provided at its upper end with anair-exit, a cap secured detachably to the lower end of the casing andformed with a central downwardly extending nipple having acircumferentially reduced lower end portion, an air and water-inletchamber secured detachably to said nipple and provided with means forconnecting it to the radiator, a disk seated in said cap and formed witha downwardly extending plug fitted to the interior of the nipple, saiddisk being provided with a central vertical air and water-passageextending through the plug, and the lower end of said plug formed with avalve-seat surrounding the lower end of the passage, a circular platescrewed into thel cap and bearing upon the disk and provided with acentral opening coinciding with the passage, above said plate to providea compartment communicating with the passage and upper chamber, atubular float in the said upper chamber normally resting upon thediaphragm and having a surrounding space, n

a rod extending through the central passage and float and connected atits upper end to the float, and a valve disposed in the inletchamber andconnected to the lower end of the rod as set forth.

3. A radiator-valve comprising an upright cylindrical casingconstituting thev mam chamber and provided at its upper end with anair-exit, a cap secured detachably to the lower end of the casin andhaving its bottom remote from said end, and formed a diaphragmsupportedy with a central downwardly extending screwthreaded nipple, anauxiliary casing secured to said nipple and constituting an air andwater-inlet chamber and formed at one side with an externallyscrew-threaded tubular member for attaching it to the radiator,

a non-metallic disk seated upon the bottom` of the cap and formed with acentral downwardly extending plug fitted to the interior of the nippleand provided with a central" passage, extending through the plug, saidplug having its valve-seat surrounding the lower end of the passage, aplate screwed into the cap for holding the disk therein and having thelower end of the upper casing bearing thereon, said plate being providedwith a central opening communicating with the central passage and formed4on its top with a central housing s urrounding the opening thereof, a

diaphragm seated upon the housing to provide a compartment between saiddiaphragm and subjacent plate, the housing being formed with portsaffording communication between the compartment and central passage, ahollow float disposed in the upper chamber and normally resting upon thedialower end formed with a phragm and provided lwith a. surrounding theair and water-inlet chamber and conspaoe, the diaphragm provided at itsedge nected to the lower end of the rod as set with ports aordingcommunication between forth.

szud space and aforesaid compartment, a JOHN T. WHITING. rod extendingthrough the central passage /Vitnesses: and oat and connected at its'upper end to ARTHUR S. KNEIL,

the top of the float, and a valve disposed in WAYNE D. Woon.

